$OpenBSD: patch-src_fl_font_cxx,v 1.1 2015/06/28 13:33:07 bcallah Exp $

https://github.com/IngwiePhoenix/FLTK/commit/283b909dad09048535cec8e3d69d77fa498382bf

--- src/fl_font.cxx.orig	Sun Jun 28 00:06:33 2015
+++ src/fl_font.cxx	Sun Jun 28 00:07:38 2015
@@ -55,6 +55,12 @@
 #  include "fl_font_x.cxx"
 #endif // WIN32
 
+#if ! (defined(WIN32) || defined(__APPLE__))
+XFontStruct *fl_X_core_font()
+{
+  return fl_xfont.value();
+}
+#endif
 
 double fl_width(const char* c) {
   if (c) return fl_width(c, (int) strlen(c));
